398844232178 has 8 divisors (see below), whose sum is σ = 683732969472. Its totient is φ = 170933242356.

The previous prime is 398844232177. The next prime is 398844232211. The reversal of 398844232178 is 871232448893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (398844232177) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14244436850 + ... + 14244436877.

It is an arithmetic number, because the mean of its divisors is an integer number (85466621184).

Almost surely, 2^398844232178 is an apocalyptic number.

398844232178 is a deficient number, since it is larger than the sum of its proper divisors (284888737294).

398844232178 is a wasteful number, since it uses less digits than its factorization.

398844232178 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28488873736.

The product of its digits is 18579456, while the sum is 59.

The spelling of 398844232178 in words is "three hundred ninety-eight billion, eight hundred forty-four million, two hundred thirty-two thousand, one hundred seventy-eight".